Home / 31,929.39-47,894.12-13,188.84

Finding the Fourth Proportional to 31,929.39, 47,894.12 and 13,188.84

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Solution

The fourth proportional to 31,929.39, 47,894.12 and 13,188.84 is: 19,783.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,929.39 : 47,894.12 = 13,188.84 : x
  2. Step 2: Convert to fraction form
    31,929.39/47,894.12 = 13,188.84/x
  3. Step 3: Cross multiply
    31,929.39x = 47,894.12 × 13,188.84
  4. Step 4: Simplify right side
    31,929.39x = 631,667,819.68
  5. Step 5: Solve for x
    x = 631,667,819.68/31,929.39
  6. Step 6: Final answer
    x = 19,783.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.